package day21;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class study2 {
    public static void main(String[] args) {
        Map<String, Object> mep=new HashMap<String,Object>();{
            mep.put("tom","汤姆");
            mep.put("jier","吉瑞");
            mep.put("marry","玛丽");
            Object te=mep.get("tom");
            System.out.println(te.toString());
        }
    }

}

